Alfred John Casillan, MD, PHD
NPI 1205956935ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Baltimore, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) (MD, PHD) with Johns Hopkins University, practicing in Baltimore, Maryland. Medicare paid $16,226 for services to 24 patients in 2024. Paragonix Technologies, Inc. was the largest of 2 companies reporting payments in 2025, $848.35 in all, mostly food and beverage. Lists Johns Hopkins Hospital, the as a hospital affiliation.
Overview
| NPI | 1205956935 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Mar 29, 2007 |
| Last updated in NPPES | Jun 2, 2022 |
| Certified by provider | Jun 2, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | D92159 | MD |
| Surgery | 208600000X | 94-06527 | KS |
| Thoracic Surgery (Cardiothoracic Vascular Surgery) | 208G00000X | 036128318 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Thoracic Surgery (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 24 |
|---|---|
| Services billed | 98 across 22 procedure codes |
| Paid by Medicare | $16,226 |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Thoracic Surgery |
Medical group
- Johns Hopkins UniversityBaltimore, MD · 2,909 clinicians
Hospital affiliation
- Johns Hopkins Hospital, theBaltimore, MD
Industry payments (Open Payments)
- 2025$848.35 · 5 payments from 2 companies
- 2024$331.42 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Paragonix Technologies, Inc. | $743.28 | 4 |
| United Therapeutics Corporation | $105.07 | 1 |
What the 2025 payments were for
- Food and Beverage$848.35 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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